/*
 *     Copyright (c) 2021-2024. ForteScarlet.
 *
 *     Project    https://github.com/simple-robot/simpler-robot
 *     Email      ForteScarlet@163.com
 *
 *     This file is part of the Simple Robot Library.
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU Lesser General  License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     Lesser GNU General  License for more details.
 *
 *     You should have received a copy of the Lesser GNU General  License
 *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 */

package com.gitee.wsl.text.keyword

/**
 *
 */
 object EmptyFilterParameterMatcher : ValueMatcher {
    override val original: String get() = ""
    override val regex: Regex = Regex("")
    override fun matches(text: String): Boolean = true
    override fun getParam(name: String, text: String): String? = null
    override fun getParameters(text: String?): MatchParameters = EmptyFilterParameters
}

/**
 *
 */
 object EmptyKeyword : Keyword {
    override val regex: Regex
        get() = EmptyFilterParameterMatcher.regex

    override val text: String
        get() = ""

    override val regexValueMatcher: ValueMatcher
        get() = EmptyFilterParameterMatcher
}

/**
 *
 */
 object EmptyFilterParameters : MatchParameters {
    override fun get(key: String): String? = null
}
